unconvincing
🇺🇸
/ˌʌnkənˈvɪnsɪŋ/
🇬🇧
/ˌʌnkənˈvɪnsɪŋ/
Lacking the quality to persuade or convince; not credible.
His apology was unconvincing, as he didn't seem genuinely remorseful.
彼の謝罪は説得力がなく、真に後悔しているようには見えなかった。